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Akaoka, Katsuaki; Maruyama, Yoichiro; Oba, Masaki; Miyabe, Masabumi; Wakaida, Ikuo
no journal, ,
For applying Laser Induced Breakdown Spectroscopy (LIBS) to the analysis of the impurities in the matrix components of uranium (U) and plutonium (Pu), the effect of composition ratio of matrix elements is necessary to evaluate. As simulated samples, the europium and gadolinium were mixed at different composition ratios, and added calcium or lutetium as impurities. Using LIBS for these samples, we measured the effect of composition ratio for the spectrum intensity of impurities. In the results, The spectra intensity of impurities was found to be unaffected by the composition ratio of the matrix material.
Oba, Masaki; Maruyama, Yoichiro; Akaoka, Katsuaki; Miyabe, Masabumi; Wakaida, Ikuo
no journal, ,
Defocus effect of ablation pulses in the double pulse LIBS was examined by measuring of the ablation volume using confocal laser microscope. In the result, optimum condition of the focus position was 5 mm apart from the sample surface defocus condition. This result indicates the direct relationship between the optimum plasma emission and ablated volume.
Wakaida, Ikuo; Akaoka, Katsuaki; Oba, Masaki; Maruyama, Yoichiro; Miyabe, Masabumi; Otobe, Haruyoshi; Kato, Masaaki; Oba, Hironori; Niki, Hideaki*; Ikeda, Yuji*; et al.
no journal, ,
"Development of laser remote analysis for low-decontaminated TRU fuel" entrusted to Japan Atomic Energy Agency by the MEXT has been studied by combination of laser induced breakdown spectroscopy for elemental analysis and resonance absorption spectroscopy for isotope analysis. In this presentation, results on elemental analysis of the detection limit of order 100 ppm and the performance on isotopic measurement of the detection limit of 350 ppm success to detect 
U in natural uranium are summarized. And the new program of "Development of laser remote analysis for next generation nuclear fuel and demonstration study by MOX sample" will be introduced and temporal results will be described.